/*
 * Copyright 2007 Nathan Smith
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.geeksmithology.io;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;

public class Files {
    public static byte[] toBytes(File file) throws IOException {
        if (!file.exists()) {
            throw new IllegalArgumentException("File from which to get bytes does not exist.");
        }

        if (!file.canRead()) {
            throw new IllegalArgumentException("File from which to get bytes is not readable.");
        }

        if (!file.isFile()) {
            throw new IllegalArgumentException("File from which to get bytes is not readable.");
        }

        return Streams.toBytes(new FileInputStream(file));
    }

    public static byte[] toBytesUnchecked(File file) {
        try {
            return toBytes(file);
        } catch (IOException e) {
            throw new RuntimeException("IOException during read: " + e.getMessage(), e);
        }
    }
}
